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| Section | Weight | Objectives |
|---|---|---|
| Design Resilient Architectures | 26% | - Implement appropriate caching strategies
|
| Design Cost-Optimized Architectures | 20% | - Design cost-optimized compute solutions
|
| Design Secure Architectures | 30% | - Design secure application tiers
|
| Design High-Performing Architectures | 24% | - Design data transfer solutions
|
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NEW QUESTION # 144
A Solutions Architect is building an application that stores object data. Compliance requirements state that the data stored is immutable.
Which service meets these requirements?
Answer: B
Explanation:
Explanation
data stored in Glacier is immutable by default (without any extra adjustments) but for S3 data will be immutable you have to apply S3 Object Lock protection but option A only says S3. Data stored in S3 is not immutable by default without applying object lock protection.
https://aws.amazon.com/glacier/features/
NEW QUESTION # 145
A company has a new mobile app. Anywhere in the world, users can see local news on topics they choose.
Users also can post photos and videos from inside the app.
Users access content often in the first minutes after the content is posted. New content quickly replaces older content, and then the older content disappears. The local nature of the news means that users consume 90% of the content within the AWS Region where it is uploaded.
Which solution will optimize the user experience by providing the LOWEST latency for content uploads?
Answer: C
Explanation:
The most suitable solution for optimizing the user experience by providing the lowest latency for content uploads is to upload and store content in Amazon S3 and use S3 Transfer Acceleration for the uploads. This solution will enable the company to leverage the AWS global network and edge locations to speed up the data transfer between the users and the S3 buckets.
Amazon S3 is a storage service that provides scalable, durable, and highly available object storage for any type of data.Amazon S3 allows users to store and retrieve datafrom anywhere on the web, and offers various features such as encryption, versioning, lifecycle management, and replication1.
S3 Transfer Acceleration is a feature of Amazon S3 that helps users transfer data to and from S3 buckets more quickly. S3 Transfer Acceleration works by using optimized network paths and Amazon's backbone network to accelerate data transfer speeds.Userscan enable S3 Transfer Acceleration for their buckets and use a distinct URL to access them, such as <bucket>.s3-accelerate.amazonaws.com2.
The other options are not correct because they either do not provide the lowest latency or are not suitable for the use case. Uploading and storing content in Amazon S3 and using Amazon CloudFront for the uploads is not correct because this solution is not designed for optimizing uploads, but rather for optimizing downloads.
Amazon CloudFront is a content delivery network (CDN) that helps users distribute their content globally with low latency and high transfer speeds.CloudFront works by caching the content at edge locations around the world, so that users can access it quickly and easily from anywhere3. Uploading content to Amazon EC2 instances in the Region that is closest to the user and copying the data to Amazon S3 is not correct because this solution adds unnecessary complexity and cost to the process. Amazon EC2 is a computing service that provides scalable and secure virtual servers in the cloud.Users can launch, stop, or terminate EC2 instances as needed, and choose from various instance types, operating systems, and configurations4. Uploading and storing content in Amazon S3 in the Region that is closest to the user and using multiple distributions of Amazon CloudFront is not correct because this solution is not cost-effective or efficient for the use case. As mentioned above, Amazon CloudFront is a CDN that helps users distribute their content globally with low latency and high transfer speeds.However, creating multiple CloudFront distributions for each Region would incur additional charges and management overhead, and would not be necessary since 90% of the content is consumed within the same Region where it is uploaded3.
References:
What Is Amazon Simple Storage Service? - Amazon Simple Storage Service
Amazon S3 Transfer Acceleration - Amazon Simple Storage Service
What Is Amazon CloudFront? - Amazon CloudFront
What Is Amazon EC2? - Amazon Elastic Compute Cloud
NEW QUESTION # 146
Your company currently has a 2-tier web application running in an on-premises data center. You have experienced several infrastructure failures in the past two months resu lting in significant financial losses.
Your CIO is strongly agreeing to move the application to AWS. While working on achieving buy-in from the other company executives, he asks you to develop a disaster recovery plan to help improve Business continuity in the short term. He specifies a target Recovery Time Objective (RTO) of 4 hours and a Recovery Point Objective (RPO) of 1 hour or less. He also asks you to implement the solution within 2 weeks. Your database is 200GB in size and you have a 20Mbps Internet connection.
How would you do this while minimizing costs?
Answer: C
Explanation:
Overview of Creating Amazon EBS-Backed AMIs
First, launch an instance from an AMI that's similar to the AMI that you'd like to create. You can connect to your instance and customize it. When the instance is configured correctly, ensure data integrity by stopping the instance before you create an AMI, then create the image. When you create an Amazon EBS-backed AMI, we automatically register it for you.
Amazon EC2 powers down the instance before creating the AMI to ensure that everything on the instance is stopped and in a consistent state during the creation process. If you're confident that your instance is in a consistent state appropriate for AMI creation, you can tell Amazon EC2 not to power down and reboot the instance. Some file systems, such as XFS, can freeze and unfreeze activity, making it safe to create the image without rebooting the instance.
During the AMI-creation process, Amazon EC2 creates snapshots of your instance's root volume and any other EBS volumes attached to your instance. If any volumes attached to the instance are encrypted, the new AMI only launches successfully on instances that support Amazon EBS encryption. For more information, see Amazon EBS Encryption.
Depending on the size of the volumes, it can take several minutes for the AMI-creation process to complete (sometimes up to 24 hours).You may find it more efficient to create snapshots of your volumes prior to creating your AMI. This way, only small, incremental snapshots need to be created when the AMI is created, and the process completes more quickly (the total time for snapshot creation remains the same). For more information, see Creating an Amazon EBS Snapshot.
After the process completes, you have a new AMI and snapshot created from the root volume of the instance. When you launch an instance using the new AMI, we create a new EBS volume for its root volume using the snapshot. Both the AMI and the snapshot incur charges to your account until you delete them. For more information, see Deregistering Your AMI.
If you add instance-store volumes or EBS volumes to your instance in addition to the root device volume, the block device mapping for the new AMI contains information for these volumes, and the block device mappings for instances that you launch from the new AMI automatically contain information for these volumes. The instance-store volumes specified in the block device mapping for the new instance are new and don't contain any data from the instance store volumes of the instance you used to create the AMI.
The data on EBS volumes persists. For more information, see Block Device Mapping.
NEW QUESTION # 147
A solutions architect has configured the following IAM policy.
Which action will be allowed by the policy?
Answer: C
NEW QUESTION # 148
An organization has 4 people in the IT operations team who are responsible to manage the AWS infrastructure. The organization wants to setup that each user will have access to launch and manage an instance in a zone which the other user cannot modify.
Which of the below mentioned options is the best solution to set this up?
Answer: B
Explanation:
A Virtual Private Cloud (VPC) is a virtual network dedicated to the user's AWS account. The user can create subnets as per the requirement within a VPC. The VPC also work with IAM and the organization can create IAM users who have access to various VPC services. The organization can setup access for the IAM user who can modify the security groups of the VPC. The sample policy is given below:
{
"Version": "2012-10-17",
"Statement":
[{ "Effect": "Allow",
"Action": "ec2:RunInstances", "Resource":
["arn:aws:ec2:region::image/ami-*", "arn:aws:ec2:region:account:subnet/subnet-1a2b3c4d",
"arn:aws:ec2:region:account:network-interface/*", "arn:aws:ec2:region:account:volume/*",
"arn:aws:ec2:region:account:key-pair/*", "arn:aws:ec2:region:account:security-group/sg-123abc123" ] }]
}
With this policy the user can create four subnets in separate zones and provide IAM user access to each subnet.
Reference:
http://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/VPC_IAM.html
NEW QUESTION # 149
......
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